The 2007 Lexus IS350 sport sedans are quick, responsive and fun to drive. Designed to compete with BMW 3 Series sedans, the Lexus IS models are built on rear-wheel-drive chassis tuned for sporty handling. They stick in corners and stop with authority, aided by high-performance brakes and tires.

A prominent central console clearly establishes the driver and front-passenger zones. The controls wrap around the driver with every gauge and switch within easy scrutiny or close reach. The Optitron gauges are large and easy to read, and their light-saber indicator needles and dynamic redline indication are cool modern. The keyless entry and pushbutton ignition is handy.

New for 2007 is the X-Package, which combines a sports suspension and 18-inch alloy wheels with a bold front spoiler, sport pedals, and illuminated door scuff plates. Also, the electronic stability programs can be disabled by turning off the traction control. Lexus says this might be useful when trying to extricate the car from snow, and in other situations as well.

The IS 350 is the quickest model. Its muscular torque and free-revving engine delivers strong acceleration performance, something we saw driving one at Willow Springs raceway.

We drove several examples of the IS models at competition speeds relentlessly in temperatures that rose above 110 degrees and not one of them stumbled or misfired. Because of the hot, slippery track surface, the tires constantly fought for grip, but the advanced chassis electronics made it easier to keep the cars on the pavement. The inherent balance of the IS models made it easy to push it to the limit, causing the electronic aids to step in and dampen the thrill.